Geomechanical Characterization Of Sedimentary And Crystalline Geothermal Reservoirs
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Geomechanical Characterization Of Sedimentary And Crystalline Geothermal Reservoirs
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Author : Martin Potten
language : en
Publisher:
Release Date : 2020
Geomechanical Characterization Of Sedimentary And Crystalline Geothermal Reservoirs written by Martin Potten and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
Geomechanical Characterization Of Geothermal Reservoirs In The Bavarian Molasse Basin
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Author : Robin Seithel
language : en
Publisher:
Release Date : 2019
Geomechanical Characterization Of Geothermal Reservoirs In The Bavarian Molasse Basin written by Robin Seithel and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
Iaeg Aeg Annual Meeting Proceedings San Francisco California 2018 Volume 2
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Author : Abdul Shakoor
language : en
Publisher: Springer
Release Date : 2018-08-25
Iaeg Aeg Annual Meeting Proceedings San Francisco California 2018 Volume 2 written by Abdul Shakoor and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-25 with Science categories.
This book is one out six IAEG XIII Congress and AEG 61st Annual Meeting proceeding volumes, and deals with topics related to the geotechnical and environmental site characterization. The theme of the IAEG/AEG Meeting, held in San Francisco from September 17-21, 2018, is Engineering Geology for a Sustainable World. The meeting proceedings analyze the dynamic role of engineering geology in our changing world. The meeting topics and subject areas of the six volumes are: Slope Stability: Case Histories, Landslide Mapping, Emerging Technologies; Geotechnical and Environmental Site Characterization; Mining, Aggregates, Karst; Dams, Tunnels, Groundwater Resources, Climate Change; Geologic Hazards: Earthquakes, Land Subsidence, Coastal Hazards, and Emergency Response; and Advances in Engineering Geology: Education, Soil and Rock Properties, Modeling.
Seismic Characterization Of Geothermal Reservoirs By Application Of The Common Reflection Surface Stack Method And Attribute Analysis
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Author : Marcin Pussak
language : en
Publisher:
Release Date : 2014
Seismic Characterization Of Geothermal Reservoirs By Application Of The Common Reflection Surface Stack Method And Attribute Analysis written by Marcin Pussak and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
An important contribution of geosciences to the renewable energy production portfolio is the exploration and utilization of geothermal resources. For the development of a geothermal project at great depths a detailed geological and geophysical exploration program is required in the first phase. With the help of active seismic methods high-resolution images of the geothermal reservoir can be delivered. This allows potential transport routes for fluids to be identified as well as regions with high potential of heat extraction to be mapped, which indicates favorable conditions for geothermal exploitation. The presented work investigates the extent to which an improved characterization of geothermal reservoirs can be achieved with the new methods of seismic data processing. The summations of traces (stacking) is a crucial step in the processing of seismic reflection data. The common-reflection-surface (CRS) stacking method can be applied as an alternative for the conventional normal moveout (NMO) or the dip moveout (DMO) stack. The advantages of the CRS stack beside an automatic determination of stacking operator parameters include an adequate imaging of arbitrarily curved geological boundaries, and a significant increase in signal-to-noise (S/N) ratio by stacking far more traces than used in a conventional stack. A major innovation I have shown in this work is that the quality of signal attributes that characterize the seismic images can be significantly improved by this modified type of stacking in particular. Imporoved attribute analysis facilitates the interpretation of seismic images and plays a significant role in the characterization of reservoirs. Variations of lithological and petro-physical properties are reflected by fluctuations of specific signal attributes (eg. frequency or amplitude characteristics). Its further interpretation can provide quality assessment of the geothermal reservoir with respect to the capacity of fluids within a hydrological system that can be extracted and utilized. The proposed methodological approach is demonstrated on the basis on two case studies. In the first example, I analyzed a series of 2D seismic profile sections through the Alberta sedimentary basin on the eastern edge of the Canadian Rocky Mountains. In the second application, a 3D seismic volume is characterized in the surroundings of a geothermal borehole, located in the central part of the Polish basin. Both sites were investigated with the modified and improved stacking attribute analyses. The results provide recommendations for the planning of future geothermal plants in both study areas
State Of The Art In Deep Geothermal Energy In Europe
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Author : Johanna Fink
language : en
Publisher: Springer Nature
Release Date : 2022-04-21
State Of The Art In Deep Geothermal Energy In Europe written by Johanna Fink and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-04-21 with Science categories.
Since nearly 50 % of Europe's energy demand is in the heating and cooling sector, it is expected that geothermal energy will play an important role in the transition to a decarbonized energy system. However, deep geothermal energy is currently harvested mainly from areas with very favorable geothermal conditions. As these areas are geographically limited, the use of geothermal energy in less favorable regions is essential for unleashing the full potential of geothermal energy, since they make up the majority of the total geothermal potential in Central Europe. Motivated by the growing interest in deep geothermal energy among, e.g., energy companies and communities, this text reviews the state of the art in deep geothermal energy with focus on direct heating in geothermally less favorable regions. It provides an overview of technologies used to generate heat from the deep underground and discusses main technical and non-technical risks associated with deep geothermal projects. The text addresses readers with an interest in geothermal energy but does not require a background in geoscience or engineering sciences. It is suitable as textbook for Geothermal Energy courses for undergraduate students from different disciplines.
Research On The Physical Properties Of Geothermal Reservoir Rocks
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Author : Colorado School of Mines. Department of Geophysics
language : en
Publisher:
Release Date : 1977
Research On The Physical Properties Of Geothermal Reservoir Rocks written by Colorado School of Mines. Department of Geophysics and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Geothermal resources categories.
The Geomechanical Characteristics Of Reservoirs And Reservoir Rocks
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Author :
language : en
Publisher:
Release Date : 1992
The Geomechanical Characteristics Of Reservoirs And Reservoir Rocks written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992 with Carbonate reservoirs categories.
Geothermal Reservoir Characterization Of The South Swan Hills Oil Pool Swan Hills Alberta
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Author : Christopher V. Noyahr
language : en
Publisher:
Release Date : 2021
Geothermal Reservoir Characterization Of The South Swan Hills Oil Pool Swan Hills Alberta written by Christopher V. Noyahr and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021 with Geothermal resources categories.
Research in the South Swan Hills oil pool was performed to accurately delineate the geometry of the subsurface reservoir and subsequently quantify the amount of thermal energy that can be extracted for geothermal use from the reservoir water volume. South Swan Hills is an active oilfield developed in a reef atoll known as the Swan Hills Formation, in Swan Hills, central Alberta, Canada. The Swan Hills oil pool is an attractive geothermal prospect because it currently produces 700 to 1100 m3 of >100 °C water daily from a high porosity and permeability reservoir. That hot water is currently is re-injected but could be available for electrical power production and other direct uses. The reservoir model is based on lithofacies analysis from high-resolution core descriptions that recorded lithologies, bioclast type and characteristics, and sedimentary structures. Core descriptions were correlated to well logs, enabling 9 distinct lithofacies to be mapped across the field. Lithofacies distributions permit identification of three distinct reef geometries; a reef interior, a reef margin and a terminal shoal, capping deposition. The vertical variability is described using sequence stratigraphic interpretations. Six sequence stratigraphic surfaces were identified and correlated across the reef. These surfaces affected reef growth and areal extent, captured in the model. The geological analysis was transformed into a 3-D geocellular model using a sequential indicator simulator that describes lithofacies and, in turn, porosity and permeability distributions based on strong relationships between lithofacies and petrophysical properties. The reef is divided into three representative regions; the interior, margin and terminal shoal. The interior deposits formed the bulk of non-reservoir material in the centre of the reef build-up. The margin surrounded the interior and formed a continuous 1 - 2 km band of reservoir material around it. The reservoir thickness is 20 - 30 m and primarily composed of reef flat material. The terminal shoal is disconnected from the bulk of reef deposits by a thick layer of impermeable clay. The shoal is a reservoir body that spans the reef area at the capping the reef complex. The reservoir has an average reservoir thickness of 10 - 15 m and is composed of a heterogeneous mix reservoir and non-reservoir material. The P10 to P90 range of porosity of the reservoir units is from 3.2 and 14.5 % and the range of permeability is between 0.21 and 73 mD. The distribution of reservoir facies is more uniform in the margin compared to the shoal. Estimates of potential power production from the South Swan Hills reef are achieved by applying flow simulations to the heterogeneously populated geocellular model. The simulations tested the production capabilities of isolated shoal and margin reservoirs from well doublets inserted into the model grids. The variables tested included varying flow rate and varying well spacing. The model also captured the range of power production by considering reservoir quality at different percentile (P10, P50 and P90) porosity and permeability values. The optimal spacing that balanced well spacing and flow rates was determined to be between 400 - 500 m in both shoal and margin grids. The range of power production estimates for a single doublet in the shoal ranged from 32.8 - 2726.31 kW. The range of power production estimates in the margin for a single doublet ranged from 64.61 kw - 3197 kW. Historical production data reports indicate that the thermal potential of a doublet likely exists between P50 and P10 values for both shoal and margin grids between 546.08 kW - 2726 kW in the shoal and 1005.77 - 3197.63 kW in the margin.
Characterization Of Thermal Properties Of Geothermal Reservoirs
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Author : Konstantinos Bischiniotis
language : en
Publisher:
Release Date : 2018
Characterization Of Thermal Properties Of Geothermal Reservoirs written by Konstantinos Bischiniotis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
Characterization Of Fractured Geothermal Reservoirs Based On Production Data
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Author : Egill Júlíusson
language : en
Publisher:
Release Date : 2012
Characterization Of Fractured Geothermal Reservoirs Based On Production Data written by Egill Júlíusson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Reservoir characterization is one of the most important and challenging parts of running a successful geothermal operation. Characterization requires thorough understanding of the physics that govern the flow of mass and energy through the reservoir. As for most subsurface modeling endeavors, the inability to measure the actual value of properties in the geothermal system make it necessary to strike a balance between what is included in the reservoir model and what is known about the physical processes that might take place in the subsurface. This balance should reflect the decisions that need to be made based on the model, and the data available for model calibration. In this work, a number of methods were developed for characterizing well-to-well connections in fractured geothermal reservoirs. These methods were based on production data that are commonly recorded in geothermal fields, i.e. pressure, flow rate, tracer and temperature. A key aspect in the developing this work, for multiwell applications, was to find the link between the various types of models, and understand how they could be combined to estimate well-to-well properties. The estimation of these properties relied on regression analysis, where an effort was made to balance the complexity of the regression model with the information required from the given data source. The combined characterization defined a work flow that would be well-suited to characterize fractured geothermal systems, with low compressibility characteristics. An effort was made to illustrate the usefulness of the characterization method to tackle important reservoir engineering problems. This was done by formulating and solving a flow rate scheduling problem for a geothermal field. The results showed that considerable gains in efficiency could be made, given a set of well-calibrated interwell relationships.